 |
|
|
|
|
|
|
|
|
What names are known for the quarter circle shape? |
2006-03-06 |
|
From Christina:
What names are known for the quarter circle shape?
Answered by Stephen La Rocque and Penny Nom. |
|
|
|
|
|
|
A nine digit number |
2006-03-06 |
|
From Ryan:
What is the total number of possible combinations of a nine digit number (ie., social security number) including repeating numbers?
Answered by Stephen La Rocque and Penny Nom. |
|
|
|
|
|
|
2,4,9,6,5,6,____,____,____,... |
2006-03-06 |
|
From Mike:
I am having problems figuring out the following sequence:
2,4,9,6,5,6,____,____,____,...
We were able to guess that the pattern simply started to reverse itself,
but I was wondering if there were other possibilities.
Answered by Claude Tardif. |
|
|
|
|
|
|
The area of a regular decagon |
2006-03-06 |
|
From Ester:
how do i find the area of a regular decagon with sides of length 6 cm and an apothem of 9.2 cm?
Answered by Stephen La Rocque. |
|
|
|
|
|
|
A hat contains between 10 and 25 marbles |
2006-03-06 |
|
From Kerry:
A hat contains between 10 and 25 marbles. Some marbles are green, and the rest are yellow. Without looking you are to reach into the hat and pull out a marble. The probability of pulling out a green marble is 2/9. How many marbles are in the hat and explain?
Answered by Stephen La Rocque and Penny Nom. |
|
|
|
|
|
|
Heights and shadows |
2006-03-06 |
|
From Debra:
A person is 7 ft tall and his shadow is 10 ft tall. using the same info what is the shadow of a person who is 5ft tall
Answered by Stephen La Rocque. |
|
|
|
|
|
|
The nth term |
2006-03-05 |
|
From Umar:
my question is what is the nth term for a house of cards 4 stories high if you use the following numbers:
2 7 15 26
Answered by Penny Nom. |
|
|
|
|
|
|
An equation involving logarithms |
2006-03-05 |
|
From Chris:
Given that loge y = 0.3logex+1.2 show that y=3.32 x0.3
Answered by Penny Nom. |
|
|
|
|
|
|
The units digit |
2006-03-05 |
|
From Taran:
My teacher asked: What is the unit's digit in the product 5 X 10 X 15 X 20 X 25? What is a "unit's digit", what are they asking for?
Answered by Penny Nom. |
|
|
|
|
|
|
If something costs $40, and they took 20% off, what is the original price |
2006-03-04 |
|
From Kevin:
If something costs $40, and they took 20% off, what is the original price
Answered by Penny Nom. |
|
|
|
|
|
|
1/infinity and 1/0 |
2006-03-04 |
|
From Evan:
I was thinking the other day when i was in math class that when you divide 1 by say n you'll get 1/n. As the value of n increases the smaller the number you get. So if you divide 1/infinity would that equal zero? And if that is true then would 1/0=infinity be true also?
Answered by Penny Nom. |
|
|
|
|
|
|
A 5900% increase |
2006-03-03 |
|
From Pat:
I want to find out the % of production increase from 250 dolls a month to 15,000 dolls a month. i think it is 5900% but that seems too high.
Answered by Penny Nom. |
|
|
|
|
|
|
Balls in a cylinder |
2006-03-03 |
|
From Roxanne:
If a cylindrical can holds three balls with no room to spare, explain how to find the volume of the air that surrounds the balls in the can. Yet the balls have a diameter of six inches
Answered by Stephen La Rocque. |
|
|
|
|
|
|
The quadratic formula |
2006-03-03 |
|
From Miriam:
Please show work and indicate "answer", using the quadratic formula -
(x+2) (2x+3) = 6
Answered by penny Nom. |
|
|
|
|
|
|
The meaning of numbers |
2006-03-03 |
|
From John:
I'm having a philosophical debate on the meaning of numbers, equations, or the world of math in general. Would it be possible if you could help me by giving me a resource that talks about it or if you have your own opinion I would be most grateful.
Answered by Harley weston. |
|
|
